Frequencies for first 10,000 rows of clia_lab_classification_cd_10 variable in posclia2018 dataset : CLIA_LAB_CL | ASSIFICATIO | N_CD_10 | Freq. Percent Cum. ------------+----------------------------------- 0 | 1,798 17.98 17.98 5 | 4 0.04 18.02 . | 8,198 81.98 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 15 Feb 2019